TIAA-CREF Large Cap Growth Index Fund Retirement Class (TRIRX) is a mutual fund offered by Teachers Insurance and Annuity Association of America-College Retirement Equities Fund (TIAA), a leading financial services organization providing retirement and investment products primarily to the academic, medical, cultural, and research communities. The fund seeks to track the investment results of the Russell 1000 Growth Index, investing at least 80% of its assets in securities included in the index; it holds large-cap U.S. growth stocks across sectors such as technology, consumer discretionary, and healthcare, with top holdings typically including companies like Apple, Microsoft, Nvidia, Amazon, and Meta Platforms. TIAA, founded in 1918 and headquartered in New York City, operates globally with a focus on the U.S. market and offers a broad range of products including retirement plans, annuities, brokerage services, and institutional asset management through subsidiaries like Nuveen. In recent developments, TIAA completed the rebranding of its investment management arm from TIAA Investments to Nuveen in 2021 to emphasize its expanded capabilities, and in 2024 launched enhanced ESG-focused index strategies amid growing demand for sustainable investing; the fund itself maintains a low expense ratio of approximately 0.30% and has seen asset growth exceeding $2 billion as of late 2025, reflecting strong inflows into passive large-cap growth vehicles. TRIRX targets retirement savers and institutional investors seeking low-cost, benchmark-hugging exposure to U.S. large-cap growth equities, with daily liquidity and automatic dividend reinvestment options.